Polymer 纸张对话框中的自动对焦纸张输入仅工作一次？ 改名 取消 改名

此纸张对话框仅在您第一次打开时触发对其纸张输入的自动聚焦

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如何在每次打开对话框时触发焦点

要修复对话框上的自动对焦，我必须使用事件侦听器并手动对焦元素

例如：

<paper-dialog>
  <h2>Rename</h2>
  <div>
    <paper-input autofocus></paper-input>
  </div>
  <div class="buttons">
    <paper-button dialog-dismiss>Cancel</paper-button>
    <paper-button dialog-confirm on-click="_confirm">Rename</paper-button>
  </div>
</paper-dialog>

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如果有一个触发器函数打开对话框，也可以使用如下代码：

this.$。\uuuuu myDialog\uuuuuu.open（）；
this.async（函数（）{
此.$.\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu；
});

window.addEventListener('iron-overlay-opened', function(event) {
    // Grab the autofocus input
    var input = event.target.querySelector('[autofocus]');
    // Switch it because some require special treatment
    switch(input.tagName.toLowerCase()) {
        case 'input':
            input.focus();
            break;
        case 'paper-textarea':
        case 'paper-input':
            input.$.input.focus();
            break;
    }
});